Page:Popular Science Monthly Volume 88.djvu/103

Popular Science Monthly

LTHOUGH it is possible with little snow on the ground to run a motorcycle with its rubber tires, it has been found impossible to do so when the fall measures several inches, and a resident of Gait, Ont., has solved the problem thus presented.

The rubber tires were taken off the front wheel of the machine, and off the wheel on the side car, and runners were fitted on, and bolted to the rims of the wheels. The rubber tire remains on the rear wheel of the machine for driving purposes, but the runner on the front wheel makes the rut, thus permitting the use of the one tire.

Y applying a belt and pulley device to his motorcycle, a mechanic who runs a grinding establishment has been able to double his output in the last season, the motorcycle supplying the power to grind lawn mowers, and the like. Fans driven by the same power keep the engine cool, so that it can run many hours without overheating.

The device was constructed by W. M. Conover in his shop in Gettysburg, Pa., and is a complete success. Of course the motorcycle is of value to him in securing business, and the belt and pulley attachment can be removed with no trouble in a few minutes' time.

AW-ABIDING motorists who have had the disagreeable experience of being arrested when they were well within the limit of the law will doubtless greet, with delight, the new invention of a Pennsylvania inventor. By means of a speed indicator, similar to the indicators which are found on the instrument boards of nearly every car, the inventor has made a combination license tag holder and speed indicator which shows clearly to the public the number of the car, as well as the exact speed at which the car is traveling.



A semicircular plate, with the numbers in multiples of five up to thirty miles an hour, is equipped with a pointer, which indicates accurately the speed of the car. Both the license tag and the indicator plate are perforated, and are illuminated at night by means of a light placed behind them.